I-5 southbound closed overnight in Portland for weekend Marquam Bridge repairs

Starting Friday, July 18, through Sunday, July 20, the southbound lanes of the Marquam Bridge in Portland will close overnight for maintenance from 9 p. m. to 5 a. m. The closure will affect traffic between I-405 and I-84, necessitating a detour for drivers.

Those traveling south on I-5 can divert onto I-405 southbound over the Fremont Bridge to rejoin I-5 southbound. Additionally, drivers aiming for I-84 eastbound from I-5 south can take the same detour to reach the northbound lanes of the Marquam Bridge. The northbound I-5 lanes will remain open during this period, minimizing disruption for some travelers. This maintenance is vital for the bridge's ongoing safety and operational integrity. Local authorities encourage commuters to plan ahead to avoid potential delays.

Such repairs are part of routine maintenance to ensure infrastructure reliability.